Finding the Fourth Proportional to 1,513,775,251.80, 2,270,662,877.70 and 478,953,336.60
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Solution
The fourth proportional to 1,513,775,251.80, 2,270,662,877.70 and 478,953,336.60 is: 718,430,004.90
Step by Step Solution
- Step 1: Write the proportion equation
1,513,775,251.80 : 2,270,662,877.70 = 478,953,336.60 : x - Step 2: Convert to fraction form
1,513,775,251.80/2,270,662,877.70 = 478,953,336.60/x - Step 3: Cross multiply
1,513,775,251.80x = 2,270,662,877.70 × 478,953,336.60 - Step 4: Simplify right side
1,513,775,251.80x = 1,087,541,561,568,172,672 - Step 5: Solve for x
x = 1,087,541,561,568,172,672/1,513,775,251.80 - Step 6: Final answer
x = 718,430,004.90
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.